I had also problem with my T9.1 when i get it, it start leaking. After i talk to the trader, i grease all seals an O-Rings with Teflon-Grease (Silikon Grease should work too), and since then , there was no more leaking gas.....

I had also problem with my T9.1 when i get it, it start leaking. After i talk to the trader, i grease all seals an O-Rings with Teflon-Grease (Silikon Grease should work too), and since then , there was no more leaking gas.....

Try asking one of the more experienced posters in the TIB threads direectly maybe like voodoo for example. Seems pretty knowledgeable and dont forget to check the tib forum itself. Also can always check a local tech or call tiberius themselves. The only time Ive ever had a leak out of my 9.1 velocity adjuster was when it got turned up to high and the relief went off, just turned it down.

I found some loose metal crap from production in one of the holes, i guess it chewed through my O-rings. I cleaned both sides (big spring area and pen spring area) with a Q-tip until it was nothing left, then i flushed it with warm water and let it air dry.
After it was dry i check again with the Q-tip to make sure there was nothing left.

Tip of the day, take the whole thing apart, all screws out from the whole metal piece, check every hole you can find, clean it, there might be production scrap metal in other places too..

Exchange all O-rings and oil what should be oiled.
That worked for me.

If you have done all that and put it together according to that video i linked.. then i would REALLY check if the leak isn't actually coming from somewhere else, like the optional remote hose screw in the back of the barrel. I've had problems with both and sometimes it's hard to tell where the leak is actually coming from.

Bought new t8.1 pistol after 5 shots all the co2 blew out down the barrel...bought another gun..same thing! Changed and greased ALL the orings but everytime i slide a new co2 in whooosh..and dumps all the co2 down the barrel...i have looked at every avenue to fix these guns with the manual and tiberius = useless! PLEASE HELP!

If you're dumping down the barrel, the 110 p70 o ring at the end of the air chamber where the bolt slides on is the culprit 99% of the time. Have you talked with Chris in service? Make sure you grease that o ring with dow33, not oil. When you pull it apart to check that ring, slide the bolt over the air chamber and make sure it doesn't contact. Make sure the solid seal is on the hole closest to the front of the regulator. Hit me up if you can't get it straight.

Bought new t8.1 pistol after 5 shots all the co2 blew out down the barrel...bought another gun..same thing! Changed and greased ALL the orings but everytime i slide a new co2 in whooosh..and dumps all the co2 down the barrel...i have looked at every avenue to fix these guns with the manual and tiberius = useless! PLEASE HELP!

If you're dumping down the barrel, the 110 p70 o ring at the end of the air chamber where the bolt slides on is the culprit 99% of the time. Have you talked with Chris in service? Make sure you grease that o ring with dow33, not oil. When you pull it apart to check that ring, slide the bolt over the air chamber and make sure it doesn't contact. Make sure the solid seal is on the hole closest to the front of the regulator. Hit me up if you can't get it straight.

Yes! it is that p70 oring! I thought (and was told) that it just hung loose in the bottom of the chamber! Thanx! What a major operation that was..getting it back in that groove!!